denismityachkin

Worked on government projects: https://business.diia.gov.ua, https://pulse.gov.ua and one more Implemented id.gov.ua auth/digital sign, core content functionality + admin client, main page etc

Working conditions: We used GitLab for projects, Cl / CD and more. Jira for tickets and time tracking. We practiced weekly meets. Remote work with flexible schedule. Accomplishments: Implemented two-factor authentication with Google Authenticator or email verification methods using time-based tokens that improved company product security level. Integrated AWS S3 to manage and store large-scale data securely. Developed payment grace period logic to enhance user flexibility and improve retention rates. Additionally, integrated grace period testing tools, setting the foundation for a future payment testing API. Designed and implemented secure verification code systems using advanced encryption techniques. Implemented document block for e-sign. Worked on promo-code feature for payment system and supported Stipe integration. Collaborated with development teams to meet project deadlines, supported the preparation of technical documentation, implemented unit/api tests and much more.